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-2x+4(-7+12)=-132
We simplify the equation to the form, which is simple to understand
-2x+4(-7+12)=-132
Reorder the terms in parentheses
-2x+(+20)=-132
Remove unnecessary parentheses
-2x+20=-132
We move all terms containing x to the left and all other terms to the right.
-2x=-132-20
We simplify left and right side of the equation.
-2x=-152
We divide both sides of the equation by -2 to get x.
x=76
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